I worked with Niki Doyle and the Huntsville Tennis Center to develop a small control panel that lets them indicate court status to their website visitors. It is easy to use on the backend and was easy to integrate into the frontend.
The fine folks at Poker Affiliate Solutions help their customers build websites that show various poker related offers, handle user management and process affiliate payouts. They wanted to add another tool to their arsenal and asked me to integrate their API and existing templating language into WordPress. After a lot of work, we arrived at a solution that worked exactly as they wanted.